/* Prof. Keras Chatbot Widget */

/* Floating Action Button */
#keras-chatbot-btn {
  align-items: center;
  background: linear-gradient(135deg, #D00101, #A30000);
  border: none;
  border-radius: 50%;
  bottom: 28px;
  box-shadow: 0 4px 16px rgba(163, 0, 0, 0.4);
  color: #fff;
  cursor: pointer;
  display: flex;
  height: 60px;
  justify-content: center;
  position: fixed;
  right: 28px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  width: 60px;
  z-index: 9998;
}

#keras-chatbot-btn:hover {
  box-shadow: 0 6px 24px rgba(163, 0, 0, 0.5);
  transform: scale(1.08);
}

#keras-chatbot-btn.chatbot-open {
  transform: rotate(45deg) scale(1.08);
}

#keras-chatbot-btn svg {
  fill: #fff;
  height: 28px;
  width: 28px;
  transition: transform 0.2s ease;
}

#keras-chatbot-btn.chatbot-open svg {
  transform: rotate(-45deg);
}

/* Chat Window */
#keras-chatbot-window {
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 16px;
  bottom: 100px;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.15);
  display: none;
  flex-direction: column;
  height: 520px;
  max-height: calc(100vh - 140px);
  overflow: hidden;
  position: fixed;
  right: 28px;
  width: 400px;
  z-index: 9999;
}

#keras-chatbot-window.chatbot-visible {
  display: flex;
  animation: chatbot-slide-up 0.25s ease-out;
}

@keyframes chatbot-slide-up {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Header */
.chatbot-header {
  align-items: center;
  background: linear-gradient(135deg, #D00101, #8A0000);
  color: #fff;
  display: flex;
  flex-shrink: 0;
  justify-content: space-between;
  padding: 14px 18px;
}

.chatbot-header-title {
  align-items: center;
  display: flex;
  font-family: 'Montserrat', 'Open Sans', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  gap: 8px;
  letter-spacing: 0.3px;
}

.chatbot-header-title img {
  border-radius: 50%;
  height: 28px;
  width: 28px;
}

.chatbot-header-subtitle {
  font-size: 0.7rem;
  font-weight: 400;
  opacity: 0.85;
}

.chatbot-close-btn {
  background: rgba(255, 255, 255, 0.15);
  border: none;
  border-radius: 50%;
  color: #fff;
  cursor: pointer;
  font-size: 1.2rem;
  height: 32px;
  line-height: 1;
  transition: background 0.2s;
  width: 32px;
}

.chatbot-close-btn:hover {
  background: rgba(255, 255, 255, 0.3);
}

/* Messages Area */
.chatbot-messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  scroll-behavior: smooth;
}

.chatbot-messages::-webkit-scrollbar {
  width: 5px;
}

.chatbot-messages::-webkit-scrollbar-track {
  background: transparent;
}

.chatbot-messages::-webkit-scrollbar-thumb {
  background: #ccc;
  border-radius: 3px;
}

/* Individual Message */
.chatbot-msg {
  animation: chatbot-msg-in 0.2s ease-out;
  margin-bottom: 12px;
  max-width: 88%;
}

@keyframes chatbot-msg-in {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.chatbot-msg-user {
  margin-left: auto;
}

.chatbot-msg-bot {
  margin-right: auto;
}

.chatbot-msg-bubble {
  border-radius: 14px;
  font-family: 'Montserrat', 'Open Sans', sans-serif;
  font-size: 0.85rem;
  line-height: 1.55;
  padding: 10px 14px;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.chatbot-msg-user .chatbot-msg-bubble {
  background: #292321;
  border-bottom-right-radius: 4px;
  color: #fff;
}

.chatbot-msg-bot .chatbot-msg-bubble {
  background: #F3F3F3;
  border-bottom-left-radius: 4px;
  color: #292321;
}

/* Bot message content styling */
.chatbot-msg-bot .chatbot-msg-bubble p {
  margin: 0 0 8px 0;
}

.chatbot-msg-bot .chatbot-msg-bubble p:last-child {
  margin-bottom: 0;
}

.chatbot-msg-bot .chatbot-msg-bubble code {
  background: rgba(163, 0, 0, 0.08);
  border-radius: 3px;
  color: #A30000;
  font-family: 'Roboto Mono', monospace;
  font-size: 0.8rem;
  padding: 1px 5px;
}

.chatbot-msg-bot .chatbot-msg-bubble pre {
  background: #292321;
  border-radius: 8px;
  margin: 8px 0;
  overflow-x: auto;
  padding: 10px 12px;
}

.chatbot-msg-bot .chatbot-msg-bubble pre code {
  background: none;
  color: #ccc;
  font-size: 0.78rem;
  padding: 0;
}

.chatbot-msg-bot .chatbot-msg-bubble a {
  color: #A30000;
  text-decoration: underline;
}

.chatbot-msg-bot .chatbot-msg-bubble a:hover {
  color: #D00101;
}

.chatbot-msg-bot .chatbot-msg-bubble ul,
.chatbot-msg-bot .chatbot-msg-bubble ol {
  margin: 4px 0 8px 0;
  padding-left: 20px;
}

.chatbot-msg-bot .chatbot-msg-bubble li {
  margin-bottom: 2px;
}

.chatbot-msg-bot .chatbot-msg-bubble strong {
  font-weight: 700;
}

/* Typing Indicator */
.chatbot-typing-indicator {
  align-items: center;
  display: flex;
  gap: 4px;
  padding: 4px 0;
}

.chatbot-typing-indicator span {
  animation: chatbot-bounce 1.2s infinite;
  background: #999;
  border-radius: 50%;
  display: block;
  height: 7px;
  width: 7px;
}

.chatbot-typing-indicator span:nth-child(2) {
  animation-delay: 0.15s;
}

.chatbot-typing-indicator span:nth-child(3) {
  animation-delay: 0.3s;
}

@keyframes chatbot-bounce {
  0%, 60%, 100% {
    transform: translateY(0);
  }
  30% {
    transform: translateY(-6px);
  }
}

/* Input Area */
.chatbot-input-area {
  border-top: 1px solid #E7E7E7;
  display: flex;
  flex-shrink: 0;
  gap: 8px;
  padding: 12px 14px;
}

.chatbot-input {
  background: #F3F3F3;
  border: 1px solid #ddd;
  border-radius: 20px;
  color: #292321;
  flex: 1;
  font-family: 'Montserrat', 'Open Sans', sans-serif;
  font-size: 0.85rem;
  outline: none;
  padding: 10px 16px;
  transition: border-color 0.2s;
}

.chatbot-input:focus {
  border-color: #A30000;
  box-shadow: 0 0 0 2px rgba(163, 0, 0, 0.1);
}

.chatbot-input::placeholder {
  color: #999;
}

.chatbot-send-btn {
  align-items: center;
  background: linear-gradient(135deg, #D00101, #A30000);
  border: none;
  border-radius: 50%;
  color: #fff;
  cursor: pointer;
  display: flex;
  flex-shrink: 0;
  height: 40px;
  justify-content: center;
  transition: transform 0.15s, opacity 0.15s;
  width: 40px;
}

.chatbot-send-btn:hover {
  transform: scale(1.05);
}

.chatbot-send-btn:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

.chatbot-send-btn svg {
  fill: #fff;
  height: 18px;
  width: 18px;
}

/* Error message */
.chatbot-error {
  color: #A30000;
  font-size: 0.78rem;
  font-style: italic;
}

/* Powered-by footer */
.chatbot-powered {
  color: #999;
  font-size: 0.65rem;
  padding: 0 14px 8px;
  text-align: center;
}

/* Mobile Responsive */
@media screen and (max-width: 500px) {
  #keras-chatbot-window {
    border-radius: 0;
    bottom: 0;
    height: 100%;
    left: 0;
    max-height: 100vh;
    right: 0;
    width: 100%;
  }

  #keras-chatbot-btn {
    bottom: 16px;
    height: 52px;
    right: 16px;
    width: 52px;
  }

  #keras-chatbot-btn svg {
    height: 24px;
    width: 24px;
  }
}